Update clang to r339409b.

Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm-c/TargetMachine.h b/linux-x64/clang/include/llvm-c/TargetMachine.h
index 7f672b5..bcfa001 100644
--- a/linux-x64/clang/include/llvm-c/TargetMachine.h
+++ b/linux-x64/clang/include/llvm-c/TargetMachine.h
@@ -45,6 +45,7 @@
 typedef enum {
     LLVMCodeModelDefault,
     LLVMCodeModelJITDefault,
+    LLVMCodeModelTiny,
     LLVMCodeModelSmall,
     LLVMCodeModelKernel,
     LLVMCodeModelMedium,